Graining tool



Jam. 9.19231 P. A. GSTALDER.

GRAINING TOOL. FILED APR.16.1921.

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lllatenterll dans implication tiled llpril le, llilftl. aerial lilo. 461,972.

To all whom it muy concern:

lle it known that l, PAUL ll.. Gerahmte, a citizen et the lnited 'States residing at Pittsburgh, in the county ot Allegheny and lltate olf ljennsylvania, have invented a cer tain new' and useful improvement in G'raining rlFools, ot which the following is a toll, clear, and exact description, reference being`- had to the accempa-nyinrgI drawings.

rllhis invention relates to graininpg appli-- anoes, and is primarily concerned yvith the provision et a tool adapted tor usei 1n torming interrupted lines in a graining compound applied to the surface to he grained.

d method heretofore employed for grain ingvarioussurtaces embodies the application ot a distemper coat over a ground coat oi tlat paint on the surtace to be grained, and the subsequent manipulation ot such distemper coat by means ot a grain forming tool. llrequently the character ot the lines so termed are too sharply deiined, and to reducethis appearance it is customary to i dravv a comb over the surface subsequent to the grain forming operation. ll have round, however, that the employment ot a comb re quires considerable skill and frequently does not produce satisfactory results in that the grain structure termed is still unduly regular and repetitional in appearance.

Accordingly, one oit the objects ot my in vention is the provision ot a tool which may be employed in lieu of a comb and still avoid regularity in the etl'ect produced.

linother `object is the provision of a tool which is adapted to be moved rapidly across the surface to. be grained and which does not require much slrill or experience tor its etiicient use.

ln accomplishing the above objects, l provide a ,draining tool which is shown in the :form ot a rotary member, which is arranged to be conveniently operated by means of a handle. For producing; the desired results, l provide a Working surface which comn prises a series ot ribs havingthe contact faces thereof interrupted by notches on that part thereof which is arranged to be brought into direct contact with the surface to be grained.

rlhe means igor accomplishing; the above objects will be more fully set forth in the following description which relates to the drawings, and,` the essential characteristics ot my invention will be set lorth in the claim.

ln the drawings; l is a perspective of a graininp; tool embodying 'features ci inI invention; llig. 2 is a longitudinal section taken through the center et such a tool; Fig.

is a developed Working,` surface ot a graining` tool constructed in accordance with my invention; llig. a is a section talren on the line l t oi llig. 3.

My invention contemplates, in general, the provision of a rotary tool which is adapted to be rolled over a surface to be grained, tor breaking up the regularity olE the lines which are lett on the distemper coat by the grain `lornoing tool. Accordingly, in lligs( l and 2., l have shown a rotary tool as ernbodied in a core 10 which is preferably a cylindricalmemben rotatably supported at ll, in the tree ends or a handle l2. This handle is shown as comprising a single strip o Wire bent to a ll-shape`,the intermediate por-tion thereo'l comprising a handle which may be conveniently held in the hand of the operator.

To provide a Working surface Yfor eiiectu ing the results desired, l have shown a sheet oliflexible material i3, which is arranged to be secured to the cylindrical portion of the core and to entend entirely around the pe riphery thereof. This sheet preferably com prises a strip ot rubber having a series ot savv tooth ribs llwhich may be termed into the sheet during the molding thereof. rllhese ribs are preferably positioned parallel to each other and arranged on the strip so as to extend around the periphery of the core,

in planes perpendicular to the axis thereof.`

rllhe @raining effect tor avoiding; the regu larity et lines, is obtained by interrupting the ribs. Accordingly, l provide a series ot notches on each rib and have shovvn such notches as being staggered on adjacent ribs. The term ot notches, and the method ot positioning them is simply illustrative, hoW- ever, because it is possible to etiect the same results by providing a series et ribs interrupted in other term. l have found that the regularity of interruption as shown in Fig. 3 does not produce any undesirable repetitional effect in the Work, since the graining coat has already been varied by the grain forming tool.

iin operation, this tool is rolled across the surface to be grained after the grain ornr ing tool has been moved over such surface by the usual combined rocking` and dragging motion. Since the core is free' to rotate on the ends of the handle, it results that the working surface oi the tool leaves a series of interrupted lines en the distemper coat, which lines are spaced similarly to the lines on the Working; surface. rPhe points of the various ribs separate the distemper inaterial, and the interruptedportionsof `such ribs leave the distemper coat undisturbed. it have found that :i surface acted upon by such av tool7 breaks up the sharp edges left by the grain forming` tool and provides a surface which is a very goed representation of the actual grain.

Having thus described my invention, I claim:

graining tool comprising' a cylindrical body portion, a handle .secured thereto, a gralning pad secured upon the said body portion, said pad comprising an integral resilienty structure cori/uprising a hase portion having` a plurality et npstandiirhr parallel ribs thereon, said ribs eidendinv entirely around the body portion oi' the cylinder, a series of notches in said ribs, said notches in each rib being ar 1anged in staggered relation with those in adjoining ribs, hereby the line ot eontact between the ribs and the surface to be grained interrupted.

In testimony whereof, l hereunto allix my signature.

PAUL A. GSTALDER. 

